mallory



Ma 21, 1929. c, MALLORY Re. 17,301

EXPANS I BLE GOLLAPS I BLE ELEMENT Original Filed-June T, 1916 A TTORNEY Reissued May 21, 1929.

UNITED STATES PATENT HARRY GQMALLORY, DECEASED, LATE OF IBELLPORT, NEW YORK, BY SUE R. .MAL-

LORY, ADMINISTRATRIX, OF BELLPORT, NEW YORK, ASSIGNOR '10 AMERICAN RADIATOR COMPANY, A CORPORATION OF NEW JERSEY.

EXPANSIBLE COLLAPSIBLE ELEMENT.

Original application filed .Tune 7, 1916, Serial No. 102,115. Divided and application. filed January 30, 1924, Serial No. 689,401. Original No. 1,624,348, dated April 12, 1927. Applicationfor reissue filed January 27,1928. Serial No. 250,027.

The invention relates to elastic elements, and the same has for its object more particularly to provide an elastic metallic element for use in connection with apparatus or devices subject to or influenced by temperature or pressure variations, whereby to operate a valve, apparatus or other mechanism.

Further, said invention has for its object to provide an eXpansible-collapsible element and, integral therewith, an imperforate. or closed end portion therefor reinforced on its inner and outer sides whereby to give greater strength and rigidity thereto and to permit said closed end to more efliciently cooperate with other parts, mechanisms or devices adapted to be operated or controlled by said element.

-Further, said invention has for its object to provide a corrugated expansible-collapsible element for the purposes specified, and, integral therewith, an imperforate or closed end portion therefor reinforced upon its inner and outer sides by a pair of separate reinforcing members permanently secured thereto, of which, the outer of said members serves as a valve or other member adapted to coact with other parts, mechanisms or devices to be operated or controlled by said element.

Other objects will in part be obviousand in part be pointed out hereinafter.

To the attainment of the aforesaid objects and ends the invention consists in the novel details of construction, and in the combination, connection and arrangement of parts hereinafter more fully described and the pointed out in the claims. 7

In .the accompanying drawing forming part of this specification wherein like numerals of reference indicate like parts;

The figure is a vertical sectional view showing one form of expansible-collapsible element constructed according to and embodying the said invention.

The invention is disclosed,ifor purposes of illustration, in connection with a thermostat steam trap such as is designed for use in.

connection with vacuum heating systems. The flexible or expansible-collapsible metallic element 1O is of the bellows type, i. e. comprises an intermediate portion with a series of circumferential corrugations 10 therein and has an open end 11 land a closed end constituting an imp'erforate or fluid tight end portion or boss 12 integral therewith.

The open end 11 of the element 10 is secured in a groove 13 in a valve bonnet 14 by means of a tubular member 15 extending into the hollow element 10 and provided with an expanded portion 16 compressing the wall of said open end 11 into the groove 13 to securely hold the same in position therein. A

perforated metal cap 17 is placed over the member 15 to-preventdirt from entering into thesame and to permit free circulation of air therein.

The closed or imperforate end 12 of the ele-' ment 10 is reinforced upon its inner side by a fiat metal disk or member 18 disposed therein,

and secured by crimping or rolling the adjacent portion 19 of the wall of the element 10 over and around the edge of the same.

The outer side of the end 12 of element 10 is separately reinforced by a one piece member 20 having a stem 20 integral therewith and projecting centrally therefrom. The re- .inforcing member 20 has a recess 21 inthe upper face thereof formed by a rim or flange 22 integral with member 20. The interiorly reinforced end 12 of the element 10 is fitted Withinreccss 21 of the member 20 and the flange 22 is crimped or rolled upwardly and I l inwardly around and over the disk 18 and the retaining portion 19 therefor, whereby the r member 20. is firmlysecured to the end 12,

the latter being reinforced and clamped betracts.

The valve body 25 is connected to a radiator by means of a union nut 26 and has athreaded connection 27 to an escape or return ipe. The operation of thermostatic steam traps of the type described is well known and such operation need not be' further elaborated;

Inproducing'an eXpansible-collapsible element embodying the present invention, there is first formedthe shell 10 having the closed end 12. The metal disk 18 is positioned therein and the portion 19 rolled or formed to retain the disk 18 in place. The shell 10 is then subjected to the action of suitable dies, Whereby to circumferentially corrugate its intermediate or body portion to form the series of corrugations or folds 1O therein.

Hereupon the outer reinforcing member is seated or fitted upon the closed interiorly reinforced end 12 and the flange 22 thereof crimped, pressed or rolled firmly into engagement with the outer side of the retaining portion 19 for the disk 18 to reinforce said portion 19 and to provide a secure connection of member 20 thereto.

The member 18 disposed within the closed end 12 of the shell 10 and the member 20 secured to said closed end upon the outside thereof jointly serve to interiorly and exteriorly reinforce said closed end.

This application is a division of an application Serial No. 102,115, filed by Harry G. Mallory on June 7, 1916, the latter application in turn being a continuation in part of an application, Serial No. 833,593, filed by him April 22, 1914s, renewed December 5,1919, Serial No. 342,802 and patented January 25, 1921, No. 1,366,47 3.

Having thus described said invention, What is claimed and desired to secure by Letters Patent is: v

1. An eXpansible-collapsible element comprising a shell having a circumferentially corrugated body portion, a closed end, a member disposed within said end to reinforce the same and engaged at the edge thereof by a portion of said shell, and-a one piece reinforc- -1ng member including an intermediate portion engaging the outer side, of said end and peripheral means extending over and embracing directly the portion of said shell engaging the edge of said inner member-to secure said outer member to said end, substantially as specified.

2. An expansible-collapsible element comprising a shell having a circumferentially corrugated body portion, a closed end, a member disposed Within said end to reinforce the same and engaged at the edge thereof by a portion of said shell, anda one piece reinforcing member including an intermediate portion engaging the outer side of said end, pe-

" ripheral means extending over and embracing directly the portion of said shell engaging the edge of said inner member to secure said outer member to said end, and a stem projecting from said intermediate portion, substantially as specified.

3. An eXpansible-collapsible element comprising a shell having a circumferentially corrugated body portion, a closed end, a reinforcing disk disposed Within said end and retained therein against the Wall thereof by a. portion. of said shell; said closed end and said reinforcing disk forming the base of said body portion, and a one piece reinforcing member including an intermediate portion engaging the outer side of said end, a peripheral flange extending over and around said disk retaining portion of said shell to reinforce the same and to secure said member to said end, and a stem integral with said intermediate portion and projecting therefrom, substantially as specifie 4. An expansible-collapsible element comprising a shell having a circumferentially corrugated body portion, a closed end, a reinforcing disk disposedvvithin said endand retained therein against the Wall thereof by a portion of said shell extending over and around the edge of said disk; said closed end and said reinforcing disk forming the base of said body portion, a one piece reinforcing member including an intermediate portion engaging the outer side of said end, a peripheral flange extending over and around said disk retaining portion of said shell to reinforce the same and to secure said member to said end, and a stem integral With said intermediate portion and projecting centrally therefrom, and a valve member at the outer, grip end of said stem, substantially as speci- 5. AneXpansi le-collapsibleelementformed as a unitary structure comprising a shell having an elastic body portion, a closed end, and means secured Within said closed end for interiorly reinforcing the same and forming therewith the base of said body portion,substantially as specified.

6. An expansible-collapsible elementcomprising a shell of thin metal having a circumferentially corrugated body portion, a closed end, means secured Within said closed end for interiorly reinforcing the same and forming therewith the base of the closed end of said body portion, and an outer reinforcing member comprising a body portion engag ing the' underside and edge portions of said closed end, substantially as specified,

7. An expansible-collapsible element comprising a shell having a circumferentially corrugated body portion, a clos ed end, a separate member disposed within said end to reinforce the same and retained therein by a portion of said shellextending thereover, said separate member and said closed end forming the movable base of said body'portion, and a reinforcing member arranged exteriorly of said closed end and secured thereto and closely emreinforcing member arranged exteriorly of said closed end and having a flange extending over and around the portion of said shell e1n bracing said inner member to firmly secure said outer member to said end and to reinforce said retaining portion, substantially as specified.

9. An expansible-collapsible element comprising a'shell having a circuinferentially corrug-ated body portion, a closed end compris- York, in theState of New 'York, this 15th 15 day of December, one thousand nine hundred and twenty-seven. SUE R. MALLOR'Y,

Adminstmtv-z'm of the Estate of Harry G.

Mallory, Deceased. 

